Surgical dilator



FIG. 1 is a top plan view of a surgical dilator showing my new design;

FIG. 2 is a side elevational view of my new design;

FIG. 3 is a bottom plan view of my new design;

FIG. 4 is an end view of my new design as viewed from the left as seen in FIG. 1; and

FIG. 5 is an end view of my new design as viewed from the right as seen in FIG. 1. 

The ornamental design for surgical dilator, as shown. 